Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1990-07-31
1992-09-15
Kight, III, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528125, 528126, 528128, 528173, 528179, 528182, 528185, 528220, 528229, 528351, 528353, 524600, 524607, 428364, 428375, 428378, 4284735, 4273855, 4274071, 1563082, 1563099, 156324, C08G 7310, C08G 6926, C08G 6300
Patent
active
051479664
ABSTRACT:
The invention is a novel polyimide prepared from 3,4'-oxydianiline (3,4'-ODA) and 4,4'-oxydiphthalic anhydride (ODPA), in 2-methoxyethyl ether (diglyme). The polymer has been prepared in ultra high molecular weight and in a controlled molecular weight form which has a 2.5 percent offset is stoichiometry (excess diamine) with a 5.0 percent level of phthalic anhydride as an endcap. This controlled molecular weight form allows for greatly improved processing of the polymer for moldings, adhesive bonding, and composite fabrication. The higher molecular weight version affords tougher films and coatings. The overall polymer structure groups in the dianhydride, the diamine, and a metal linkage in the diamine affords adequate flow properties for making this polymer useful as a molding powder, adhesive, and matrix resin.
REFERENCES:
patent: 4543295 (1985-09-01), St. Clair et al.
patent: 4595548 (1986-06-01), St. Clair et al.
patent: 4603061 (1986-07-01), St. Clair et al.
patent: 4837300 (1989-06-01), St. Clair et al.
patent: 4895972 (1990-01-01), Stoakley et al.
Progar Donald J.
St. Clair Terry L.
Hampton-Hightower P.
Helfrich George F.
Kight III John
The United States of America as represented by the Administrator
LandOfFree
Polyimide molding powder, coating, adhesive and matrix resin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polyimide molding powder, coating, adhesive and matrix resin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyimide molding powder, coating, adhesive and matrix resin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-737503